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VikaD [51]
3 years ago
8

2x² + y² = 18xy = 4​

Mathematics
1 answer:
givi [52]3 years ago
7 0

Answer:

See the "step by step explanation" for better understanding.

Step-by-step explanation:

Let's solve for x.

2x2+y2=18

Step 1: Add -y^2 to both sides.

2x2+y2+−y2=18+−y2

2x2=−y2+18

Step 2: Divide both sides by 2.

2x22=−y2+182

x2=−12y2+9

Step 3: Take square root.

x=√−12y2+9 or x=−√−12y2+9

Answer:

x=√−12y2+9 or x=−√−12y2+9

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2x+3x^2(4x-5)<br> please helpppp asap
Aliun [14]

Here's my step-by-step explanation:

We're just gonna factor.

If your teacher has spoken of FOIL, then he/she has probably said that it means First Outer Inner Last and that it helps with distributing problems like these.

Right, so let's get to it.

2x+3x^2 (4x-5)\\2x(4x-5)+3x^2(4x-5)\\2x(4x) + 2x(-5) + 3x^2(4x) + 3x^2(-5)

Can you see the FOIL method being spread out here? Let's keep going.

2x(4x) + 2x(-5) + 3x^2(4x) + 3x^2(-5)\\8x^2 + (-10x) + 12x^3 + (-15x^2)\\12x^3 + 8x^2 - 15x^2 -10x\\12x^3 -7x^2 -10x

Hope this helps, and let me know if I made a mistake! ^_^

7 0
3 years ago
Find f. f ''(θ) = sin(θ) + cos(θ), f(0) = 2, f '(0) = 1 f(θ) =
Lunna [17]

Answer:

f(theta)=sin(theta) - cos(theta) + C

This is my first time doing a double integral, so im only 90% sure in my answer

Step-by-step explanation:

You pretty much want to take the double integral of sinx + cosx

The anti-derivative of sinx = -cosx

The anti-derivative of cosx = sinx

So f' = -cosx + sinx

Now lets take the integral of f':

The anti-derivative of -cosx = sinx

The anti-derivative of sinx = -cosx

So, f(x) = sinx - cosx

8 0
3 years ago
Read 2 more answers
Jeremys father is 11 less than jermeys age squared.if Jeremy’s father is 53, how many years older is Jeremy’s father than Jeremy
postnew [5]

Answer: 26

Step-by-step explanation:

4 0
3 years ago
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In 2008, the number of tourists visiting France was 7.94 x 10^7. The number of tourists visiting Italy was 4.27 x 10^7. Find the
Marizza181 [45]

Answer:

36700000

Step-by-step explanation:

Difference between tourists visiting France and Italy = (7.94 - 4.27) ×10^{7}

= 3.67 × 10^{7}

= 36700000

\therefore Difference between population of tourists in France and Italy are 36700000 people.

3 0
3 years ago
Pls help me ASAP!!! Tickets for a concert cost $7.50 for students and $15 for adults. 150 ticket are sold, and $1612.50 is colle
mariarad [96]
Answer: 85 student tickets, 65 adult tickets.
Let's say the # of students is x and the # of adults is y. The two equations we get are 7.50x + 15y = 1612.50 and x + y = 150
x = 150 - y
7.5(150-y) + 15y = 1612.5
1125-7.5y+15y=1612.5
7.5y=487.5
y=65

x=150-65
x=85

Hope this helps!
8 0
3 years ago
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